The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 1981
Filed:
Apr. 04, 1980
Applicant:
Inventors:
William C Copenhafer, Yardley, PA (US);
Francis Rauh, Plainsboro, NJ (US);
Assignee:
Intermountain Research & Develop. Corp., Green River, WY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01D / ; C01D / ; E21B / ;
U.S. Cl.
CPC ...
423190 ; 2330 / ; 299-5 ; 423195 ; 4232 / ; 423421 ;
Abstract
A method for enhancing recovery of sodium carbonate from sodium carbonate solutions which contain sodium chloride. Anhydrous sodium carbonate is recovered in good yields from aqueous sodium carbonate solutions containing sodium chloride by evaporative crystallization at superatmospheric pressure and at a temperature of at least about 120.degree. C.